<template>
  <div class="login_container">
     <div class="login_box">
       <!-- 头像 -->
       <div class="avatar_box">
         <img src="../assets/logo.png">
       </div>
           <!-- rel定义实例化对象 ，可以使事件，方法等-->
       <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
         <el-form-item prop="username">
           <el-input v-model='loginForm.username' prefix-icon="iconfont icon-user"></el-input>
         </el-form-item>
         <el-form-item prop="password">
           <el-input v-model='loginForm.password' type="password" prefix-icon="iconfont icon-3702mima"></el-input>
         </el-form-item>
          <el-form-item  class="btns">
          <el-button type="primary" @click="login">登录</el-button>
           <el-button type="info" @click="resetloginForm">重置</el-button>
            </el-form-item>
         </el-form>
     </div>
  </div>
</template>

<script>
export default {
   data(){
     return {
       //表当对象
       loginForm:{
          username:'admin',
          password:'123456'
       },
       loginFormRules:{
            //验证用户名
           username:[
             {required:true,message:"请输入登录名称",trigger:'blur'},
             {min:3,max:5,message:"长度在3到5个字符",trigger:'blur'}
           ],
           //验证密码
           password:[
             {required:true,message:"请输入登录名称",trigger:'blur'},
             {min:6,max:12,message:"长度在3到5个字符",trigger:'blur'}
           ]
        }
     }
   },
   methods:{
     //点击重置按钮
     resetloginForm:function(){
          this.$refs.loginFormRef.resetFields();
     },login:function(){//表单预校验
       this.$refs.loginFormRef.validate(async valid =>{
         console.log(valid);//回调函数接收表当验证的结果
         if(!valid)return ;// true||false
         const {data :res}=await this.$http.post('login',this.loginForm);

         if(res.meta.status!==200) return this.$message.error('登录失败');//$message 弹框
          //return this.$message.success("登录成功");
           //console.log(res);
          // 登录成功后吧token保存到session中,来判断是否登录,后续的api要在登录状态下时候
           window.sessionStorage.setItem("token",res.data.token);
           //编程式跳转主页
           this.$router.push("/home");//默认路径后加/home
       })
     }
   }

}
</script>

<style lang="less" scoped>
  .login_container{
    background-color: #2b4b46;
    height:100%;
  }
  .login_box{
    width:450px;
    height:300px;
    background-color:#fff;
    border-radius: 3px;
    position:absolute;
    left: 50%;
    top:50%;
    transform: translate(-50%,-50%);
  }
  .avatar_box{
    width:130px;
    height:130px;
    border:1px solid #eee;
    border-radius: 50%;
    padding:10px;
    box-shadow:0 0 10px #ddd;
    position: absolute;
    left:50%;
    transform: translate(-50%,-50%);
    background-color: #fff;
    img{
      width:100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
  .login_form{
    position: absolute;
    bottom:0;
    width:100%;
    padding:0 20px;
    box-sizing: border-box;
  }
  .btns{
    display: flex;
    justify-content: flex-end;
  }
</style>
